I have som trouble with a three column layout showing my latest posts.
When I resize the browser viewport the column and gutter width does not resize properly.
Viewport for desktop is ok, but when the viewport is resized to about 910-910 px things start to mess up.
In the first row both column and gutter width are not adapting to the viewport as expected.
In the second row column width are uneven, but the gutter width are ok.
Please note the two included screenshots.
Desktop view – ok
View resized – column and gutter mess up